reverse DNS record search

enter a record value — an IP, a CNAME target, an NS host — and get the domains that carry it

coverage

A (IPv4): 985621439 domainsCNAME target: 985621439 domainsNS host: 1189678417 domains

Values: IPv4 → A · hostname → CNAME target (or pick NS) · up to 16 values, comma or newline separated · JSON API.